"Life," he said, "is like a grapefruit." "Er, how so?" "Well, it's sort of orangey-yellow and dimpled on the outside, wet and squidgy in the middle. It's got pips inside, too. Oh, and some people have half a one for breakfast."

So Long, and Thanks for All the Fish, Chapter 23 (pp. 130-131), Harmony Books. 1984